Generates the summary information for the active workbook
static int SummaryInfo( LPCTSTR title, LPCTSTR subject, LPCTSTR author, LPCTSTR keywords, LPCTSTR comments );
Title specifies a title for the file, not necessarily a file name.
Subject is information pertaining to the subject matter of the workbook
Author is initially the name specified in the General tab of the Options dialog box.
Keywords are keywords that can be later used in searching for the contents in the file.
Comments is a comment that can be entered to help a user learn more about the contents or subject matter of the workbook.
Zero if the function has been called successfully; non-zero if the function could not be called. See Error codes for a list of return values.
See the Microsoft Excel on-line Help for full details about this function.